It was off and on. Happened 3x already. It would be on and then the next time it would not show.

What is this again?

Do I need to call in for a check up?

Battery's good (12.6V), charging is good (14.6+ V).

Dealer replaced my brake light switch under warranty and fixed this problem a few months ago. It is a very common problem and you might be able to get them to fix it even if you are out of warranty since it is so common.

Most likely is a bad brake switch. This is very typical problem for the rx. The switch is right under the brake paddle. You can get it online for $17.
This happens to my wife car a couple times. I reset the car computer by remove the black battery terminal, and it has not come back for 3 months now.

Now this is sounding familiar, brake SW recall. I have to check the TSB's. Thanks. I will call my Service Advisor anyway and see if she will invite me to come in...I have the Platinum Extended Warranty.

I will post a pic of the lights tomorrow. I seem to remember that this could be the battery or the alternator but I checked them both they seem to be OK. I cleaned up my battery terminal today, it had gunk. 1st time I have seen in a while, like 2 years.

I will post a pic of the lights tomorrow. I seem to remember that this could be the battery or the alternator but I checked them both they seem to be OK. I cleaned up my battery terminal today, it had gunk. 1st time I have seen in a while, like 2 years.

There was a recall on the brake switch. This is not related to our situation.

There was a TSB for multiple lights turning on and the AC switch blinking. This TSB says a new junction Box must be installed in the engine bay. I am not sure if this is covered by the extended warranty that I have. The original TSB is only good for the regular warranty, 48 mos/50K miles.

I do not even know that the above is the source of the issue that we have.

hey guys I am going to try to reset the ECU this weekend by unplugging the battery terminal, but afraid the car won't work right after that because I dont have any kind of instruction to reset the options. From the way you guys are describing it, it sounds pretty involved....can someone please point me to those instructions or perhaps can email them to me?